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GB2037175A - Method and means for scraping surfaces - Google Patents

Method and means for scraping surfaces

Info

Publication number
GB2037175A
GB2037175A GB7934866A GB7934866A GB2037175A GB 2037175 A GB2037175 A GB 2037175A GB 7934866 A GB7934866 A GB 7934866A GB 7934866 A GB7934866 A GB 7934866A GB 2037175 A GB2037175 A GB 2037175A
Authority
GB
United Kingdom
Prior art keywords
pattern
scraping
scraping device
marks
rotating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB7934866A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metso Minerals Sala AB
Original Assignee
Sala International AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sala International AB filed Critical Sala International AB
Publication of GB2037175A publication Critical patent/GB2037175A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
    • F27D25/001—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag comprising breaking tools, e.g. hammers, drills, scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/10—Maintenance of mixers
    • B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/12—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating drums
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/2406—Binding; Briquetting ; Granulating pelletizing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/14—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge
    • F27B7/18—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being movable within the drum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
    • F27B7/2075—Removing incrustations

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Geology (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Metallurgy (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Centrifugal Separators (AREA)
  • Crushing And Grinding (AREA)

Abstract

A method and an apparatus for operating a rotating apparatus, e.g. mixing drums or balling devices which comprise a rotating or reciprocating scraping device, e.g. in a balling drum (1). Said scraping device (6, 7) forms a periodically recurring pattern of scraping marks (8) in the particle layer (3) on the surface of the balling drum (1). The scraping device is frequently subjected to disturbing influences and may get into violent vibrations which may be accompanied by the formation of a vibration sustaining pattern superimposed on the periodically recurring pattern of scraping marks (8). Said disturbing effects can be eliminated by destroying the vibration sustaining pattern or simultaneously the vibration sustaining pattern and the periodicaly recurring scraping marks (8) pattern. An especially advantageous embodiment comprises changing the speed of the scraping device (6, 7) in an apparatus stated above with a rotating scraping device (6, 7) with intervals which are short enough to prevent that there is sufficient time for development of a vibration sustaining pattern in the periodically recurring scraping marks (8) pattern.
GB7934866A 1977-09-15 1978-09-15 Method and means for scraping surfaces Withdrawn GB2037175A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7710372A SE7710372L (en) 1977-09-15 1977-09-15 PROCEDURE AND DEVICE FOR SCRATCHING SURFACES

Publications (1)

Publication Number Publication Date
GB2037175A true GB2037175A (en) 1980-07-09

Family

ID=20332278

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7934866A Withdrawn GB2037175A (en) 1977-09-15 1978-09-15 Method and means for scraping surfaces

Country Status (4)

Country Link
EP (1) EP0006911A1 (en)
GB (1) GB2037175A (en)
SE (1) SE7710372L (en)
WO (1) WO1979000148A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016194387A (en) * 2015-03-31 2016-11-17 信越エンジニアリング株式会社 Heat treatment device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD238102A1 (en) * 1985-06-06 1986-08-06 Magdeburg Spezialbau METHOD AND DEVICE FOR BREAKING THE APPROACH AND WALL-MOUNTED THROWING DROUGHT PISTON
CN109266846B (en) * 2018-11-15 2019-09-06 燕山大学 Intelligent integrated cylinder mixing granulator and production method thereof
CN109225049B (en) * 2018-11-15 2020-12-29 燕山大学 Electric scraper device for sintering cylindrical mixer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2831210A (en) * 1951-02-16 1958-04-22 Erie Mining Co Doctoring device for balling-up drum
US2778056A (en) * 1952-03-27 1957-01-22 Oglebay Norton And Company Method and apparatus for agglomerating finely divided solid material
FR1182677A (en) * 1957-09-12 1959-06-26 Erie Mining Co Processing of ore concentrates
FR1395161A (en) * 1964-04-22 1965-04-09 Mcdowell Wellman Eng Co Scraping device for vats with agglomerated pellets
DE1264407B (en) * 1966-02-19 1968-03-28 Eirich Gustav Mixing device with rotating mixing bowl and mixing tool system driven in the opposite direction of rotation
ZA752632B (en) * 1974-05-03 1976-06-30 Consolidation Coal Co Method and apparatus for agglomerating finely divided agglomerative materials in a rotating drum
SE390382B (en) * 1975-04-24 1976-12-20 Sala International Ab DEVICE FOR MICROPELLETIZATION OF POWDERED MATERIAL

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016194387A (en) * 2015-03-31 2016-11-17 信越エンジニアリング株式会社 Heat treatment device

Also Published As

Publication number Publication date
SE7710372L (en) 1979-03-16
WO1979000148A1 (en) 1979-03-22
EP0006911A1 (en) 1980-01-23

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)